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1、a Date: 17 December 2007 Origin: International Latest date for receipt of comments: 31 March 2008 Project no.: 2004/02101 Responsible committee: NCE/8 Reactor instrumentation Interested committees: Title: IEC 60951-4 Nuclear Power Plants - Instrumentation important to safety - Radiation monitoring f
2、or accident and post accident conditions Part 4: Equipment for continuous in-line or on-line monitoring of radioactivity in process stream Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are a
3、ware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 31 March 2008. This draft is issued to allow comments from interested part
4、ies; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988
5、 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email order
6、sbsi-. British, International and foreign standards are also available from BSI Customer Services. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which imple
7、ment International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi-. Direct tel: 020 7963 5750 Responsible Committee Secretary: Mr D F Crawley (BSI) E-mail: Draft for Public Comment Head Office 389 Chiswick H
8、igh Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30175155 DC Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:12:37 GMT+00:00 2008, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based o
9、n international discussions in which the UK has taken an active part. Your comments on this draft are welcome and will assist in the preparation of the consequent standard. If no comments are received to the contrary, then the UK will approve this draft. There is a high probability that this text co
10、uld be adopted by CENELEC as a reference document for harmonization or as a European Standard. Recipients of this draft are requested to comment on the text bearing in mind this possibility. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote
11、on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Respons
12、ible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these fo
13、rmat requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- Template for comments and secretariat observat
14、ions Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.
15、1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference
16、to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:12:37 GMT+00:00 2008, Uncontrolled Copy, (c) BSI FORM CDV (IEC) 2005-09-23 45A/680/CDV COMMI
17、TTEE DRAFT FOR VOTE (CDV) PROJET DE COMIT POUR VOTE (CDV) Project number IEC 60951-4 Ed.2 Numro de projet IEC/TC or SC: 45A CEI/CE ou SC: Secretariat / Secrtariat France Submitted for parallel voting in CENELEC Soumis au vote parallle au CENELEC Date of circulation Date de diffusion 2007-12-14 Closi
18、ng date for voting (Voting mandatory for P-members) Date de clture du vote (Vote obligatoire pour les membres (P) 2008-05-16 Also of interest to the following committees Intresse galement les comits suivants 45B Supersedes document Remplace le document 45A/611/CD - 45A/635A/CC Functions concerned Fo
19、nctions concernes Safety Scurit EMC CEM Environment Environnement Quality assurance Assurance qualit CE DOCUMENT EST TOUJOURS LTUDE ET SUSCEPTIBLE DE MODIFICATION. IL NE PEUT SERVIR DE RFRENCE. LES RCIPIENDAIRES DU PRSENT DOCUMENT SONT INVITS PRSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES DR
20、OITS DE PROPRIT DONT ILS AURAIENT VENTUELLEMENT CONNAISSANCE ET FOURNIR UNE DOCUMENTATION EXPLICATIVE. THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY R
21、ELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Title : Nuclear Power Plants - Instrumentation important to safety - Radiation monitoring for accident and post accident conditions - Part 4: Equipment for continuous in-line or on-line monitoring of radioactivity
22、 in process stream Titre : Centrales nuclaires de puissance - Instrumentation importante pour la sret - Systme de surveillance des rayonnements pour les conditions accidentelles et post accidentelles - Partie 4 : Ensemble pour la surveillance des rayonnements interne ou externe au fluide de procd In
23、troductory note The attention of the National Committees is drawn to the fact that the circulation of this CDV will end after the SC 45A meeting to be held in London in April 2008. In order to achieve progress on this project the National Committees are encouraged to prepare their comments before th
24、is meeting and to pass them to their national experts attending it, so hat they can be discussed at the meeting. This CDV is circulated as an English only document in agreement with the French national committee; the French version of this document will be made available at a later date. Note dintro
25、duction, Lattention des Comits Nationaux est attire sur le fait que la diffusion de ce CDV se termine aprs la runion du SC 45A qui est prvue de se tenir Londres en avril 2008. Afin de progresser sur ce projet, les Comits Nationaux sont encourags prparer leurs commentaires et les remettre leurs exper
26、ts participant la runion, pour que ceux-ci y soient discuts. Ce CDV est diffus en anglais seulement en accord avec le comit national franais ; la version franaise de ce document sera diffuse une date ultrieure. Copyright 2007 International Electrotechnical Commission, IEC. All rights reserved. It is
27、 permitted to download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions. You may not copy or “mirror“ the file or printed version of the document, or any part of it, for any other purpose without permission in writing fr
28、om IEC. Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:12:37 GMT+00:00 2008, Uncontrolled Copy, (c) BSI CDV1 IEC 60951-4 Ed. 2.0 :2007 2 45A/680/CDV CONTENTS 1 Scope.7 2 References.7 3 Terms and definitions .7 4 Design principles8 4.1 Basic requirements rela
29、ted to functions.8 4.2 Range of measurement .8 4.3 In-line detectors mechanical features.8 4.3.1 General requirements8 4.3.2 Pressure-containing parts9 4.3.3 Materials .9 4.3.4 Shop inspection and tests9 5 Functional Testing10 5.1 Performance characteristicsError! Bookmark not defined. 5.2 Environme
30、ntal performance test 10 5.2.1 Stability of performances with variation of ambient and stream conditions10 Licensed Copy: London South Bank University, London South Bank University, Wed Jan 02 02:12:37 GMT+00:00 2008, Uncontrolled Copy, (c) BSI CDV1 IEC 60951-4 Ed. 2.0 :2007 3 45A/680/CDV INTERNATIO
31、NAL ELECTROTECHNICAL COMMISSION _ TITLE Part X: FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on
32、 all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Pu
33、blication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation
34、. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus o
35、f opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are mad
36、e to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transpa
37、rently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be r
38、endered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members o
39、f its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any
40、 other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be
41、 the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC XXX has been prepared by subcommittee XX: TITLE, of IEC technical committee XX: The text of this standard is based on the following documents: FDIS Report on vot
42、ing XX/XX/FDIS XX/XX/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. Licensed Copy: London South Bank University, London South
43、Bank University, Wed Jan 02 02:12:37 GMT+00:00 2008, Uncontrolled Copy, (c) BSI CDV1 IEC 60951-4 Ed. 2.0 :2007 4 45A/680/CDV The committee has decided that the contents of this publication will remain unchanged until the maintenance result date1) indicated on the IEC web site under “http:/webstore.i
44、ec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 1) The National Committees are requested to note that for this publication the maintenance result date is .2015. Licensed Copy: London Sout
45、h Bank University, London South Bank University, Wed Jan 02 02:12:37 GMT+00:00 2008, Uncontrolled Copy, (c) BSI CDV1 IEC 60951-4 Ed. 2.0 :2007 5 45A/680/CDV INTRODUCTION a) Technical background, main issues and organisation of the Standard This IEC standard specifically focuses on radiation monitori
46、ng systems used for accident and post accident operations This standard is intended for use by purchasers in developing specifications for their plant- specific radiation monitoring systems and by manufacturers to identify needed product characteristics when developing systems for accident monitorin
47、g conditions. Some specific instrument characteristics such as measurement range, required energy response, and ambient environment requirements will depend upon the specific application. In such cases guidance is provided on determining the specific requirements, but specific requirements themselve
48、s are not stated except as typical examples given in informative annexes. This standard is one in a series of standards covering post accident radiation monitors important to safety. The full series is comprised of the following standards. IEC 60951-1 General requirements. IEC 60951-2 Equipment for
49、continuous off-line monitoring of radioactivity in gaseous effluents and ventilation air IEC 60951-3 Equipment for continuous high range area gamma monitoring IEC 60951-4 Equipment for continuous in-line or on-line monitoring of radioactivity in process stream b) Situation of the current Standard in the structure of the IEC SC45A